Home / 87,066,431.21-120,148,072.74-47,374,125.33

Finding the Fourth Proportional to 87,066,431.21, 120,148,072.74 and 47,374,125.33

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Solution

The fourth proportional to 87,066,431.21, 120,148,072.74 and 47,374,125.33 is: 65,374,332.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,066,431.21 : 120,148,072.74 = 47,374,125.33 : x
  2. Step 2: Convert to fraction form
    87,066,431.21/120,148,072.74 = 47,374,125.33/x
  3. Step 3: Cross multiply
    87,066,431.21x = 120,148,072.74 × 47,374,125.33
  4. Step 4: Simplify right side
    87,066,431.21x = 5,691,909,856,142,716
  5. Step 5: Solve for x
    x = 5,691,909,856,142,716/87,066,431.21
  6. Step 6: Final answer
    x = 65,374,332.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.